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      11-29-2012, 09:02 PM   #24
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kensk's Avatar

Drives: 2011 e90 LCI
Join Date: Jun 2010
Location: Orange County, CA

iTrader: (3)

faulty dmtl pump leading to engine bay rattle


I'm having the same exact problem. More often at cold starts. I know theyre not exactly connected to each other but i only started hearing the rattles just after i came back from the dealers. here's what happened to me.

i have 32k miles. 2011 lci e90 335i. Just recently, i started hearing it after i came back from the dealers with a faulty dmtl pump (got my car back 11/15). 2nd time this has happened in 3 weeks. the check engine light wouldnt turn off even after the first replacement. i ended up leaving my car at the shop for a whole week. The light doesn't come on anymore but i hear the rattle. (side note: my car is completely stock) so there's no way it could've been from mods.

Here's the tech report if it helps you in any way. I'm a bit concerned and it doesn't seem like they know what the problem is.

anyone else having dmtl pump problems? and possibly to rattles?